Published March 1, 2017 | Version v1
Journal article Metadata-only

A periodic foundation with rotational oscillators for extremely low-frequency seismic isolation: analysis and experimental verification

Creators

  • 1. PhD, Assistant Professor, Department of Civil Engineering, Beijing Forestry University, Beijing 100083 (China)
  • 2. PhD, Professor, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044 (China)
  • 3. PhD, Associate Professor, School of Architecture, Tsinghua University, Beijing 100084 (China)
  • 4. PhD, Assistant Professor, Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles, School of Mechanical-electronic and Automobile Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044 (China)
  • 5. PhD student, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044 (China)

Description

A new type of periodic foundation (PF) with rotational oscillators was developed, and its locally resonant attenuation feature was analyzed numerically and experimentally. The proposed PF was composed of a concrete matrix in which local resonators consisting of steel cores with rubber linkers were attached. Finite element method was employed to comprehensively investigate influences of material and geometrical parameters on the attenuation zones. Furthermore, a scaled PF was fabricated and shake tests were performed. The locally resonant mechanism within the rotational resonator can produce extremely low-frequency wave-forbidding capability. The results demonstrated that a PF can isolate seismic waves with frequencies lower than 10 Hz, sufficient to serve as a seismic isolation foundation for civil engineering structures. This kind of foundation system opens up new perspectives for the development of seismic isolation foundations for low-frequency applications. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/1361-665X/aa5dd1

Additional details

Identifiers

DOI
10.1088/1361-665X/aa5dd1;

Publishing Information

Journal Title
Smart Materials and Structures (Print)
Journal Volume
26
Journal Issue
3
Journal Page Range
[11 p.]
ISSN
0964-1726

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
50034816
Subject category
S42: ENGINEERING;
Descriptors DEI
ATTENUATION; CIVIL ENGINEERING; CONCRETES; FINITE ELEMENT METHOD; FOUNDATIONS; OSCILLATORS; PERIODICITY; RESONATORS; SEISMIC ISOLATION; SEISMIC WAVES; STEELS
Descriptors DEC
ALLOYS; BUILDING MATERIALS; CALCULATION METHODS; CARBON ADDITIONS; ELECTRONIC EQUIPMENT; ENGINEERING; EQUIPMENT; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; MATHEMATICAL SOLUTIONS; MECHANICAL STRUCTURES; NUMERICAL SOLUTION; SUPPORTS; TRANSITION ELEMENT ALLOYS; VARIATIONS